Mr. Campbell has announced he's returning to Edinburgh to run his father's former practice, and so Sally is once again on the hunt for a new job. She fancies growing and selling her own mushrooms, but Campbell has put a good word in with the man taking over the lease on the shop.

After discovering a stash of adult magazines, Sally decides that the boys are sex mad. When David suggests they meet his daughter at the weekend, she decides to give them a talk on love and babies - but they draw the completely wrong conclusion!